ICD-10 Code H15.121 – Nodular episcleritis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H15.121 – Nodular episcleritis, right eye
What it is
This code identifies nodular episcleritis affecting the right eye. It refers to localized inflammation of the episclera, the thin tissue between the conjunctiva and sclera.
Clinical signs
Typical findings include a focal, raised, tender red nodule on the episclera with sectoral eye redness. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents nodular episcleritis in the right eye. It applies when the condition is specifically described as right-sided and not generalized or bilateral. If the note only says episcleritis without laterality, check documentation.
Do not use for
Do not use this code for scleritis, conjunctivitis, or nonspecific eye redness. Do not assume laterality if the record does not clearly state the right eye.
Coding tip
Verify the provider’s laterality and whether the episcleritis is nodular before assigning H15.121.